this very moment, millions of americans are on the move this evening, heading home for the holidays. These are shots taken just moments ago at penn station, right here in new york city where we're told the trains have been suspended, signal problems, so many trying to get to their families. And take a look at this tonight. These are planes in the sky right now, the flight tracker, as more than 43 million americans start their thanksgiving journeys. 90% of us will be on the road this holiday, and look at this tonight. Images of grid lock across this country, already pouring in. We asked our abc team out there to document their travels as they head home and you're looking at just a glimpse of what they encountered today. Abc's cecilia vega with a picture coast to coast tonight and she's live in los angeles tonight. Ceci ya? Reporter: Good evening, david the these are the folks heading home for the holiday by trains, planes and automobiles. America is on the road. If there is one thing to be thankful for this thanksgiving eve, it's that mother nature cooperated, for the most part. That thick fog blanketed chicago's o'hare first thing in the morning, canceling 130 flights. Will be delayed today due to the fog in chicago. Reporter: Not too far away at chicago's midway, one traveler tweeted they were "packed like sardines." And before the sun came up, los angeles international earned its reputation as the second thanksgiving airport, with lines that snake around and around. On the east coast tonight, a train traffic jam. All amtrak service in and out of new york city's penn station suspended because of a signal problem. But from coast to coast, on one of the busiest travel days of the year, it seemed to be, well, not so busy. You braved the holiday travel today? It wasn't bad. Reporter: I guess this makes it all worth it? Yes. Reporter: We followed our abc team as they hit the road. Heading home to kentucky. Traveling from washington, d.C. To greenville, south carolina. Houston, texans. Reporter: Abc's linsey davis flying from cleveland early this morning. Security line is starting to build, starting to wrap around a little here. Reporter: Checking in four hours early to -- this delta, with this long, long, long security line. Reporter: Heading to toronto. At least we've checked in and we are done. Reporter: And roads were mostly clear on the way to the jersey shore. It's already looking a little hairy at times, but at least it's moving. Reporter: But no matter how far or how long the journey, at the end, there's that reminder of why it's worth it. A hug from grandpa. Happy thanksgiving. Reporter: That look on mom's face. The love of a sister. That embrace. And that kiss. And a sign of just how easy the day has been here at los angeles international, the check-in counter is virtually empty. I'm headed home this evening to see my family in san francisco. David, happy thanksgiving. You, too. All worth it for the hug at the end of the journey. Thank you. And to the entire team who took their cameras along for the ride. Millions of american families traveling, as we mentioned, and this was another image that caught our eye. This was in chicago, where the fog made it absolutely miserable on the highways there, trying to get home there, as well. And, so, we want to bring in abc meteorologist singer see who spent a good deal of time forecasting in chicago. And that system on the moving this evening? Reporter: It is. That fog, that same exact area, will redevelop in places like detroit, memphis and houston. And I want to show you exactly who needs to pay attention to this, as you plan for tomorrow morning. Don't turn on the brights in that area in gray. One other spot we've been watching for the last couple of days is the pacific northwest. They've had 8 to 10 inches of rain, snowfall in the 2 to 3 foot range. They're drying out for the holiday. And siginger, not a bad thanksgiving for the rest of the country. Reporter: Not at all. You can get some big storms this time of year. Let's look at that overall picture, as far as what's happening. I-95, up and down the eastern seaboard, looking dry. A little bit of rain in parts of michigan down into texas. Dallas on the southern end of that. And drying out, again, for the west, so, from san francisco to seattle, some better pictures by tomorrow.

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